DTCs C1035 and/or C1170 stored in electronic stability program control unit (ESP) - AF27.19-P-8002A

TRANSMISSION 722.6 in MODEL 203 as of 1.8.01 up to 15.11.01 with ESP MK25 system

MODIFICATION NOTES

28.2.02

Supersedes AF27.19-P-8002A dated 12.02.2002

Title error

OPERATION NO. OF OPERATION TEXTS OR STANDARD TEXTS AND FLAT RATES

Category	Op. no.	Operation text	Time	Acc. no.	Code
P	541011	PERFORM SHORT TEST	004 WU	-	-
P	272351	REMOVE/INSTALL/REPLACE ETC CONTROL UNIT	004 WU	-	-

Damage code	Cause	Remedy
54 553 90	Electronic transmission control ETC control unit	1 Determine whether ESP MK25 system is installed in vehicle. You can recognize externally whether the new ESP MK25 system or the old ESP MK20 system is installed by proceeding as follows:
	In individual cases it is possible for the ETC control module with part number 030 545 23 32 (EGS 52 Q01 or SW 14/01) to send erroneous data on the CAN-C bus after switching on the ignition	One pressure sensor on master brake cylinder: ESP MK25 (new) Two pressure sensors on master brake cylinder: ESP MK20 (old) A further recognition characteristic on the MK25 system is the new combined yaw rate/lateral acceleration sensor.
	The electronic stability program (ESP) receives this data and then erroneously assumes that the steering angle sensor signal came from the steering tube module rather than the combined yaw rate/lateral acceleration sensor However, since the steering tube module is not currently installed in model 203, the ESP control module does not receive any data and stores the DTC specified in the document.	Conversion from MK20 to MK25 was accomplished on approx. 08/2001, however, some preliminary vehicles were produced It is therefore important to differentiate on the basis of the number of pressure sensors present on the master brake cylinder.
		2 Remove/install/replace ETC control module Use ETC Q02 or SW 42/01. Never remove/ install/replace the ESP control module, steering angle sensor or combined yaw rate/lateral acceleration sensor

PARTS ORDERING NOTES

Part no.	Designation	Quantity
032 545 12 32	ETC control unit (order with index 26 + VIN no.)	1